python小练习：摄氏度转华氏度

# Author:Hiuhung Wan
#输入一个摄氏温度值，转换成华氏温度值
notfalse = not False
while notfalse:
    degree_centigrade = input("Please Input the Degree Centigrade:")
    if degree_centigrade.isdigit():
        degree_centigrade = int(degree_centigrade)
        fahrenheit = '%.2f'%(1.8*degree_centigrade + 32)   #保留两位小数
        print("Your input is",degree_centigrade ,"degrees Celsius,\nConverted to Fahrenheit is",fahrenheit,".","\nPress Q or q to exit.")
    elif degree_centigrade == "q" or degree_centigrade == "Q":
        notfalse = False
    else:
        print("Please enter a number!")

　　目前输入小数与负数，会有BUG